- vsnet-alert - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-alert 27222] V425 Cas slightly low state continues
by Taichi Kato 21 Dec '22

21 Dec '22

V425 Cas slightly low state continues YYYYMMDD(UT) mag observer 20221025.2360 15.005zg (ZTF Alert DC mag (Masci+ 2019)) 20221025.3422 15.211zr (ZTF Alert DC mag (Masci+ 2019)) 20221025.5939 152:cG (Yutaka Maeda) 20221027.2891 15.694zr (ZTF Alert DC mag (Masci+ 2019)) 20221027.3089 15.848zg (ZTF Alert DC mag (Masci+ 2019)) 20221027.5885 153c (Yutaka Maeda) 20221028.5991 149:cG (Yutaka Maeda) 20221029.2455 15.224zr (ZTF Alert DC mag (Masci+ 2019)) 20221029.3285 15.586zg (ZTF Alert DC mag (Masci+ 2019)) 20221030.5891 148:cG (Yutaka Maeda) 20221102.6255 <147c (Yutaka Maeda) 20221103.5958 154:c (Yutaka Maeda) 20221104.6281 150:cG (Yutaka Maeda) 20221105.2279 14.708zg (ZTF Alert DC mag (Masci+ 2019)) 20221105.2878 15.162zr (ZTF Alert DC mag (Masci+ 2019)) 20221105.6236 151:c (Yutaka Maeda) 20221107.6267 148:c (Yutaka Maeda) 20221108.5655 149:c (Yutaka Maeda) 20221111.1386 15.657zr (ZTF Alert DC mag (Masci+ 2019)) 20221111.6967 153C (Masayuki Moriyama) 20221112.5616 15.56C (Seiichiro Kiyota) 20221112.5675 15.25V (Seiichiro Kiyota) 20221113.1431 15.331zr (ZTF Alert DC mag (Masci+ 2019)) 20221113.1840 15.483zg (ZTF Alert DC mag (Masci+ 2019)) 20221115.2074 15.717zg (ZTF Alert DC mag (Masci+ 2019)) 20221115.2591 15.647zr (ZTF Alert DC mag (Masci+ 2019)) 20221115.6226 153C (Masayuki Moriyama) 20221119.1624 15.714zr (ZTF Alert DC mag (Masci+ 2019)) 20221119.2826 15.446zg (ZTF Alert DC mag (Masci+ 2019)) 20221119.5533 15.67C (Seiichiro Kiyota) 20221119.5578 15.59V (Seiichiro Kiyota) 20221119.6926 154C (Masayuki Moriyama) 20221121.1618 15.790zg (ZTF Alert DC mag (Masci+ 2019)) 20221121.4704 15.47C (Seiichiro Kiyota) 20221121.5892 <157c (Yutaka Maeda) 20221123.1558 15.505zr (ZTF Alert DC mag (Masci+ 2019)) 20221123.1803 15.567zg (ZTF Alert DC mag (Masci+ 2019)) 20221123.5016 154:cG (Yutaka Maeda) 20221124.5144 151:c (Yutaka Maeda) 20221125.4717 15.32C (Seiichiro Kiyota) 20221126.5067 152c (Yutaka Maeda) 20221130.1188 15.770zg (ZTF Alert DC mag (Masci+ 2019)) 20221130.1621 16.010zr (ZTF Alert DC mag (Masci+ 2019)) 20221202.5047 145:cG (Yutaka Maeda) 20221206.4984 <150c (Yutaka Maeda) 20221207.5000 150:c (Yutaka Maeda) 20221208.4945 <155c (Yutaka Maeda) 20221209.1780 15.707zr (ZTF Alert DC mag (Masci+ 2019)) 20221209.2269 15.703zg (ZTF Alert DC mag (Masci+ 2019)) 20221209.5151 148:cG (Yutaka Maeda) 20221211.1826 15.600zr (ZTF Alert DC mag (Masci+ 2019)) 20221211.4663 <155c (Yutaka Maeda) 20221215.4999 149:cG (Yutaka Maeda) 20221215.6394 154C (Masayuki Moriyama) 20221218.6507 155C (Masayuki Moriyama)

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[vsnet-alert 27221] NSV 2026 superoutburst continues
by Taichi Kato 21 Dec '22

21 Dec '22

NSV 2026 superoutburst continues YYYYMMDD(UT) mag observer 20221211.7326 <169C (Masayuki Moriyama) 20221212.124 <17.30C (Gary Poyner) 20221212.517 <130 (Tsuneo Horie) 20221212.919 17.45C (Gary Poyner) 20221213.878 16.08C (Gary Poyner) 20221214.092 <152 (Gary Poyner) 20221214.580 <130 (Tsuneo Horie) 20221215.051 135 (Gary Poyner) 20221215.057 13.70C (Gary Poyner) 20221215.174 13.52C (Gary Poyner) 20221215.481 <130 (Tsuneo Horie) 20221215.622 136 (Hiroyuki Maehara) 20221215.9027 13.40C (Masao Funada) 20221215.903 13.81C (Gary Poyner) 20221216.028 139 (Gary Poyner) 20221217.103 13.63C (Gary Poyner) 20221217.1035 13.35C (Masao Funada) 20221217.815 138 (Gary Poyner) 20221218.125 13.78C (Gary Poyner) 20221218.474 <130 (Tsuneo Horie) 20221219.087 13.93C (Gary Poyner) 20221219.481 <130 (Tsuneo Horie) 20221219.6883 142C (Masayuki Moriyama) 20221220.103 14.03C (Gary Poyner) 20221220.217 14.05C (Gary Poyner) 20221220.649 142 (Hiroyuki Maehara)

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[vsnet-alert 27220] QZ Vir outburst
by Taichi Kato 21 Dec '22

21 Dec '22

QZ Vir outburst Faintest outburst ever recorded? YYYYMMDD(UT) mag observer 20221201.155 15.20 (Pavol A. Dubovsky) 20221205.8772 153:c (Yutaka Maeda) 20221207.8275 <147c (Yutaka Maeda) 20221208.8173 <147c (Yutaka Maeda) 20221209.8649 <153c (Yutaka Maeda) 20221220.151 12.455C (Gary Poyner) 20221220.151 12.46C (Gary Poyner) 20221220.167 12.36C (Gary Poyner) 20221220.663 129 (Hiroyuki Maehara)

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[vsnet-alert 27219] EF Eri short-term variations
by Taichi Kato 21 Dec '22

21 Dec '22

EF Eri short-term variations Kyoto U. team obtained high time-resolution observations. The object showed QPO-like variations with time scales of about 5 min. They could arise from instabilities in the accretion column. Itoh-san and Kiyota-san also reported observations showing large modulations.

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[vsnet-alert 27218] Re: EF Eri (polar) still bright
by Taichi Kato 20 Dec '22

20 Dec '22

Re: EF Eri (polar) still bright Peter Starr reported time-resolved observations. Variations up to 0.8 mag were present.

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[vsnet-alert 27217] PY Per even brighter
by Taichi Kato 20 Dec '22

20 Dec '22

PY Per even brighter YYYYMMDD(UT) mag observer 20221211.5436 <163c (Yutaka Maeda) 20221212.8611 <141 (Eddy Muyllaert) 20221214.044 <147 (Gary Poyner) 20221215.024 150 (Gary Poyner) 20221215.5773 147cG (Yutaka Maeda) 20221216.8403 <141 (Eddy Muyllaert) 20221217.174 14.56C (Gary Poyner) 20221218.7299 140C (Masayuki Moriyama)

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[vsnet-alert 27216] MGAB-V298 (AM CVn:) bright outburst
by Taichi Kato 20 Dec '22

20 Dec '22

MGAB-V298 (AM CVn:) bright outburst Likely superoutburst. YYYYMMDD(UT) mag observer 20221120.3517 21.643zr (ZTF Alert DC mag (Masci+ 2019)) 20221121.7591 <171C (Masayuki Moriyama) 20221126.8861 <157C (Masayuki Moriyama) 20221201.3930 21.746zr (ZTF Alert DC mag (Masci+ 2019)) 20221218.7800 165C (Masayuki Moriyama)

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[vsnet-alert 27215] AQ Eri stopped fading
by Taichi Kato 20 Dec '22

20 Dec '22

AQ Eri stopped fading Suggestion of a precursor? YYYYMMDD(UT) mag observer 20221217.473 150 (Rod Stubbings) 20221218.478 165 (Rod Stubbings) 20221219.475 165 (Rod Stubbings) 20221219.540 <138 (Takuichiro Onishi)

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[vsnet-alert 27214] V528 Cam outburst
by Taichi Kato 20 Dec '22

20 Dec '22

V528 Cam outburst Known WZ Sge star. Last superoutburst in 2020 Feb. YYYYMMDD(UT) mag observer 20221124.6736 <157c (Yutaka Maeda) 20221126.6738 <157c (Yutaka Maeda) 20221130.0597 <190cG (Masao Funada) 20221215.5934 <161c (Yutaka Maeda) 20221219.0726 15.80C (Masao Funada)

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[vsnet-alert 27213] ASASSN-15sm outburst
by Taichi Kato 20 Dec '22

20 Dec '22

ASASSN-15sm outburst Known SU UMa star. Relatively rare and possible superoutburst. YYYYMMDD(UT) mag observer 20221218.1662 15.36C (Masao Funada)

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